Security analysis method for practical quantum key distribution with arbitrary encoding schemes
arXiv:2109.04758
Abstract
Quantum key distribution (QKD) gradually has become a crucial element of practical secure communication. In different scenarios, the security analysis of genuine QKD systems is complicated. A universal secret key rate calculation method, used for realistic factors such as multiple degrees of freedom encoding, asymmetric protocol structures, equipment flaws, environmental noise, and so on, is still lacking. Based on the correlations of statistical data, we propose a security analysis method without restriction on encoding schemes. This method makes a trade-off between applicability and accuracy, which can effectively analyze various existing QKD systems. We illustrate its ability by analyzing source flaws and a high-dimensional asymmetric protocol. Results imply that our method can give tighter bounds than the Gottesman-Lo-Lütkenhaus-Preskill (GLLP) analysis and is beneficial to analyze protocols with complex encoding structures. Our work has the potential to become a reference standard for the security analysis of practical QKD.
References in corpus (23)
- Quantum Cryptography
- The Security of Practical Quantum Key Distribution
- Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
- Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
- Quantum Key Distribution with High Loss: Toward Global Secure Communication
- Secure quantum key distribution with realistic devices
- Security of quantum key distribution using d-level systems
- Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
- Practical Decoy State for Quantum Key Distribution
- An information-theoretic security proof for QKD protocols
- Sending or not sending: twin-field quantum key distribution with large misalignment error
- Higher-dimensional orbital angular momentum based quantum key distribution with mutually unbiased bases
- Device calibration impacts security of quantum key distribution
- Loss-tolerant quantum cryptography with imperfect sources
- Numerical approach for unstructured quantum key distribution
- Quantum Conference Key Agreement: A Review
- Field Test of Twin-Field Quantum Key Distribution through Sending-or-Not-Sending over 428 km
- Experimental quantum key distribution with source flaws
- Numerical Calculations of Finite Key Rate for General Quantum Key Distribution Protocols
- Security analysis of quantum key distribution with small block length and its application to quantum space communications
- Information theoretic security of quantum key distribution overcoming the repeaterless secret key capacity bound
- Securing quantum key distribution systems using fewer states
- Narrow basis angle doubles secret key in the BB84 protocol